To chop or not to chop? Tackling shrub encroachment by roller-chopping preserves woody plant diversity and composition in a dry subtropical forest

Autores
Rejžek, Martin; Coria, Rubén Darío; Kunst, Carlos Roberto; Svátek, Martin; Kvasnica, Jakub; Navall, Jorge Marcelo; Ledesma, Roxana Ramona; Gomez, Adriana Teresita; Matula, Radim
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Shrub encroachment is a frequently observed phenomenon in the arid and semi-arid biomes. In the dry forests of the Argentine Chaco ecoregion that are affected by shrub encroachment, the growing demand for grazing areas has led to the creation of a silvopastoral system. Under the Chaco silvopastoral system, a commonly used treatment to disrupt the excessive shrub layer and promote the growth of grasses is roller-chopping by a tractor-pulled iron drum. While previous studies evaluating the effects of roller-chopping on diversity have focused mostly on the herbaceous stratum as the primary source of forage, much less is known about the effects of roller-chopping on woody plants. To fill this gap, we measured woody plants of the shrub layer in a low-intensity roller-chopping experiment in northern Argentina after applying different frequencies of roller-chopping in a semi-arid Chaco forest area with a well-developed shrub layer. Data were collected in an experiment in which 3 different roller-chopping treatments were applied: a single two-pass roller-chopping in the summer of 2006/2007 (RCh1); a one-pass roller-chopping in the summer of 2006/2007, repeated in the summer of 2014/2015 (RCh2); and no treatment (Control). In each treatment, 16 circular, randomly placed plots with a radius of 9 m were sampled, and all woody plants in the shrub layer with a diameter ≥10 mm at the base were recorded. The diversity was analysed using profiles of alpha and beta diversity and by calculating the average distance from an individual circular plot to the treatment group centroid defined in the principal coordinate space. In total, 26 species of woody plants were recorded, of which 24 were found in Control, 22 in RCh1, and 23 in RCh2. Although the alpha diversity differed only slightly among the treatments, the beta diversity of the roller-chopped treatment areas was generally higher than that of the untreated plots. The species composition of the roller-chopped plots differed little from that of the control plots. Our study revealed little overall effect of roller-chopping on the species diversity and composition of woody plants. The transformation of the Chaco forest degraded by shrub encroachment to a silvopastoral system by roller-chopping is changing the structure of the forest but to a large extent has retained the presence and the relative abundance of woody plant species. We conclude that roller-chopping is a good management tool to reduce woody plant encroachment and create a silvopastoral system while preserving ecosystem functions.
EEA Santiago del Estero
Fil: Rejžek, Martin. Mendel University in Brno. Faculty of Forestry and Wood Technology. Department of Forest Botany, Dendrology and Geobiocoenology; República Checa
Fil: Coria, Ruben Dario. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina
Fil: Kunst, Carlos Roberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina
Fil: Svátek, Martin. Mendel University in Brno. Faculty of Forestry and Wood Technology. Department of Forest Botany, Dendrology and Geobiocoenology; República Checa
Fil: Kvasnica, Jakub. Mendel University in Brno. Faculty of Forestry and Wood Technology. Department of Forest Botany, Dendrology and Geobiocoenology; República Checa
Fil: Navall, Jorge Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina
Fil: Ledesma, Roxana Ramona. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina
Fil: Gomez, Adriana Teresita. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina
Fil: Matula, Radim. Mendel University in Brno. Faculty of Forestry and Wood Technology. Department of Forest Botany, Dendrology and Geobiocoenology; República Checa
Fuente
Forest ecology and management 402 : 29-36. (October 2017)
Materia
Arbustos
Plantas Leñosas
Bosques
Zona Subtropical
Shrubs
Woody Plants
Forests
Subtropical Zones
Picado
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
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spelling To chop or not to chop? Tackling shrub encroachment by roller-chopping preserves woody plant diversity and composition in a dry subtropical forestRejžek, MartinCoria, Rubén DaríoKunst, Carlos RobertoSvátek, MartinKvasnica, JakubNavall, Jorge MarceloLedesma, Roxana RamonaGomez, Adriana TeresitaMatula, RadimArbustosPlantas LeñosasBosquesZona SubtropicalShrubsWoody PlantsForestsSubtropical ZonesPicadoShrub encroachment is a frequently observed phenomenon in the arid and semi-arid biomes. In the dry forests of the Argentine Chaco ecoregion that are affected by shrub encroachment, the growing demand for grazing areas has led to the creation of a silvopastoral system. Under the Chaco silvopastoral system, a commonly used treatment to disrupt the excessive shrub layer and promote the growth of grasses is roller-chopping by a tractor-pulled iron drum. While previous studies evaluating the effects of roller-chopping on diversity have focused mostly on the herbaceous stratum as the primary source of forage, much less is known about the effects of roller-chopping on woody plants. To fill this gap, we measured woody plants of the shrub layer in a low-intensity roller-chopping experiment in northern Argentina after applying different frequencies of roller-chopping in a semi-arid Chaco forest area with a well-developed shrub layer. Data were collected in an experiment in which 3 different roller-chopping treatments were applied: a single two-pass roller-chopping in the summer of 2006/2007 (RCh1); a one-pass roller-chopping in the summer of 2006/2007, repeated in the summer of 2014/2015 (RCh2); and no treatment (Control). In each treatment, 16 circular, randomly placed plots with a radius of 9 m were sampled, and all woody plants in the shrub layer with a diameter ≥10 mm at the base were recorded. The diversity was analysed using profiles of alpha and beta diversity and by calculating the average distance from an individual circular plot to the treatment group centroid defined in the principal coordinate space. In total, 26 species of woody plants were recorded, of which 24 were found in Control, 22 in RCh1, and 23 in RCh2. Although the alpha diversity differed only slightly among the treatments, the beta diversity of the roller-chopped treatment areas was generally higher than that of the untreated plots. The species composition of the roller-chopped plots differed little from that of the control plots. Our study revealed little overall effect of roller-chopping on the species diversity and composition of woody plants. The transformation of the Chaco forest degraded by shrub encroachment to a silvopastoral system by roller-chopping is changing the structure of the forest but to a large extent has retained the presence and the relative abundance of woody plant species. We conclude that roller-chopping is a good management tool to reduce woody plant encroachment and create a silvopastoral system while preserving ecosystem functions.EEA Santiago del EsteroFil: Rejžek, Martin. Mendel University in Brno. Faculty of Forestry and Wood Technology. Department of Forest Botany, Dendrology and Geobiocoenology; República ChecaFil: Coria, Ruben Dario. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; ArgentinaFil: Kunst, Carlos Roberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; ArgentinaFil: Svátek, Martin. Mendel University in Brno. Faculty of Forestry and Wood Technology. Department of Forest Botany, Dendrology and Geobiocoenology; República ChecaFil: Kvasnica, Jakub. Mendel University in Brno. Faculty of Forestry and Wood Technology. Department of Forest Botany, Dendrology and Geobiocoenology; República ChecaFil: Navall, Jorge Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; ArgentinaFil: Ledesma, Roxana Ramona. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; ArgentinaFil: Gomez, Adriana Teresita. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; ArgentinaFil: Matula, Radim. Mendel University in Brno. Faculty of Forestry and Wood Technology. Department of Forest Botany, Dendrology and Geobiocoenology; República Checa2018-06-13T12:16:12Z2018-06-13T12:16:12Z2017-10-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://www.sciencedirect.com/science/article/pii/S0378112717307211http://hdl.handle.net/20.500.12123/26080378-1127https://doi.org/10.1016/j.foreco.2017.07.032Forest ecology and management 402 : 29-36. 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dc.title.none.fl_str_mv To chop or not to chop? Tackling shrub encroachment by roller-chopping preserves woody plant diversity and composition in a dry subtropical forest
title To chop or not to chop? Tackling shrub encroachment by roller-chopping preserves woody plant diversity and composition in a dry subtropical forest
spellingShingle To chop or not to chop? Tackling shrub encroachment by roller-chopping preserves woody plant diversity and composition in a dry subtropical forest
Rejžek, Martin
Arbustos
Plantas Leñosas
Bosques
Zona Subtropical
Shrubs
Woody Plants
Forests
Subtropical Zones
Picado
title_short To chop or not to chop? Tackling shrub encroachment by roller-chopping preserves woody plant diversity and composition in a dry subtropical forest
title_full To chop or not to chop? Tackling shrub encroachment by roller-chopping preserves woody plant diversity and composition in a dry subtropical forest
title_fullStr To chop or not to chop? Tackling shrub encroachment by roller-chopping preserves woody plant diversity and composition in a dry subtropical forest
title_full_unstemmed To chop or not to chop? Tackling shrub encroachment by roller-chopping preserves woody plant diversity and composition in a dry subtropical forest
title_sort To chop or not to chop? Tackling shrub encroachment by roller-chopping preserves woody plant diversity and composition in a dry subtropical forest
dc.creator.none.fl_str_mv Rejžek, Martin
Coria, Rubén Darío
Kunst, Carlos Roberto
Svátek, Martin
Kvasnica, Jakub
Navall, Jorge Marcelo
Ledesma, Roxana Ramona
Gomez, Adriana Teresita
Matula, Radim
author Rejžek, Martin
author_facet Rejžek, Martin
Coria, Rubén Darío
Kunst, Carlos Roberto
Svátek, Martin
Kvasnica, Jakub
Navall, Jorge Marcelo
Ledesma, Roxana Ramona
Gomez, Adriana Teresita
Matula, Radim
author_role author
author2 Coria, Rubén Darío
Kunst, Carlos Roberto
Svátek, Martin
Kvasnica, Jakub
Navall, Jorge Marcelo
Ledesma, Roxana Ramona
Gomez, Adriana Teresita
Matula, Radim
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Arbustos
Plantas Leñosas
Bosques
Zona Subtropical
Shrubs
Woody Plants
Forests
Subtropical Zones
Picado
topic Arbustos
Plantas Leñosas
Bosques
Zona Subtropical
Shrubs
Woody Plants
Forests
Subtropical Zones
Picado
dc.description.none.fl_txt_mv Shrub encroachment is a frequently observed phenomenon in the arid and semi-arid biomes. In the dry forests of the Argentine Chaco ecoregion that are affected by shrub encroachment, the growing demand for grazing areas has led to the creation of a silvopastoral system. Under the Chaco silvopastoral system, a commonly used treatment to disrupt the excessive shrub layer and promote the growth of grasses is roller-chopping by a tractor-pulled iron drum. While previous studies evaluating the effects of roller-chopping on diversity have focused mostly on the herbaceous stratum as the primary source of forage, much less is known about the effects of roller-chopping on woody plants. To fill this gap, we measured woody plants of the shrub layer in a low-intensity roller-chopping experiment in northern Argentina after applying different frequencies of roller-chopping in a semi-arid Chaco forest area with a well-developed shrub layer. Data were collected in an experiment in which 3 different roller-chopping treatments were applied: a single two-pass roller-chopping in the summer of 2006/2007 (RCh1); a one-pass roller-chopping in the summer of 2006/2007, repeated in the summer of 2014/2015 (RCh2); and no treatment (Control). In each treatment, 16 circular, randomly placed plots with a radius of 9 m were sampled, and all woody plants in the shrub layer with a diameter ≥10 mm at the base were recorded. The diversity was analysed using profiles of alpha and beta diversity and by calculating the average distance from an individual circular plot to the treatment group centroid defined in the principal coordinate space. In total, 26 species of woody plants were recorded, of which 24 were found in Control, 22 in RCh1, and 23 in RCh2. Although the alpha diversity differed only slightly among the treatments, the beta diversity of the roller-chopped treatment areas was generally higher than that of the untreated plots. The species composition of the roller-chopped plots differed little from that of the control plots. Our study revealed little overall effect of roller-chopping on the species diversity and composition of woody plants. The transformation of the Chaco forest degraded by shrub encroachment to a silvopastoral system by roller-chopping is changing the structure of the forest but to a large extent has retained the presence and the relative abundance of woody plant species. We conclude that roller-chopping is a good management tool to reduce woody plant encroachment and create a silvopastoral system while preserving ecosystem functions.
EEA Santiago del Estero
Fil: Rejžek, Martin. Mendel University in Brno. Faculty of Forestry and Wood Technology. Department of Forest Botany, Dendrology and Geobiocoenology; República Checa
Fil: Coria, Ruben Dario. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina
Fil: Kunst, Carlos Roberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina
Fil: Svátek, Martin. Mendel University in Brno. Faculty of Forestry and Wood Technology. Department of Forest Botany, Dendrology and Geobiocoenology; República Checa
Fil: Kvasnica, Jakub. Mendel University in Brno. Faculty of Forestry and Wood Technology. Department of Forest Botany, Dendrology and Geobiocoenology; República Checa
Fil: Navall, Jorge Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina
Fil: Ledesma, Roxana Ramona. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina
Fil: Gomez, Adriana Teresita. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina
Fil: Matula, Radim. Mendel University in Brno. Faculty of Forestry and Wood Technology. Department of Forest Botany, Dendrology and Geobiocoenology; República Checa
description Shrub encroachment is a frequently observed phenomenon in the arid and semi-arid biomes. In the dry forests of the Argentine Chaco ecoregion that are affected by shrub encroachment, the growing demand for grazing areas has led to the creation of a silvopastoral system. Under the Chaco silvopastoral system, a commonly used treatment to disrupt the excessive shrub layer and promote the growth of grasses is roller-chopping by a tractor-pulled iron drum. While previous studies evaluating the effects of roller-chopping on diversity have focused mostly on the herbaceous stratum as the primary source of forage, much less is known about the effects of roller-chopping on woody plants. To fill this gap, we measured woody plants of the shrub layer in a low-intensity roller-chopping experiment in northern Argentina after applying different frequencies of roller-chopping in a semi-arid Chaco forest area with a well-developed shrub layer. Data were collected in an experiment in which 3 different roller-chopping treatments were applied: a single two-pass roller-chopping in the summer of 2006/2007 (RCh1); a one-pass roller-chopping in the summer of 2006/2007, repeated in the summer of 2014/2015 (RCh2); and no treatment (Control). In each treatment, 16 circular, randomly placed plots with a radius of 9 m were sampled, and all woody plants in the shrub layer with a diameter ≥10 mm at the base were recorded. The diversity was analysed using profiles of alpha and beta diversity and by calculating the average distance from an individual circular plot to the treatment group centroid defined in the principal coordinate space. In total, 26 species of woody plants were recorded, of which 24 were found in Control, 22 in RCh1, and 23 in RCh2. Although the alpha diversity differed only slightly among the treatments, the beta diversity of the roller-chopped treatment areas was generally higher than that of the untreated plots. The species composition of the roller-chopped plots differed little from that of the control plots. Our study revealed little overall effect of roller-chopping on the species diversity and composition of woody plants. The transformation of the Chaco forest degraded by shrub encroachment to a silvopastoral system by roller-chopping is changing the structure of the forest but to a large extent has retained the presence and the relative abundance of woody plant species. We conclude that roller-chopping is a good management tool to reduce woody plant encroachment and create a silvopastoral system while preserving ecosystem functions.
publishDate 2017
dc.date.none.fl_str_mv 2017-10-15
2018-06-13T12:16:12Z
2018-06-13T12:16:12Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://www.sciencedirect.com/science/article/pii/S0378112717307211
http://hdl.handle.net/20.500.12123/2608
0378-1127
https://doi.org/10.1016/j.foreco.2017.07.032
url https://www.sciencedirect.com/science/article/pii/S0378112717307211
http://hdl.handle.net/20.500.12123/2608
https://doi.org/10.1016/j.foreco.2017.07.032
identifier_str_mv 0378-1127
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
eu_rights_str_mv restrictedAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Forest ecology and management 402 : 29-36. (October 2017)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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